Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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My neighbors remote opens my door too! - Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Most usually this is caused by a bad wall control or the wiring going to it. You can eliminate both possibilities by removing the wire from terminal #1 on the motor unit. The wire is sometimes intermittently shorted by the staples used for installation. The wall control just goes bad. Post the model number of your opener.

Posted on Jun 30, 2009

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Our remotes (2 for the car and a keyless entry) stopped working. We erased everything (and checked to make sure our remotes weren't working) and reprogrammed all remotes. They work, but our neighbor's...


Make sure your neighbor doesn't have a remote with a sticking switch. Often times a person will stick an extra remote in a drawer and then place something on it that holds the button down. Try programming your remotes this way just in case you didn't.

Press and hold the button down on the remote while you press and immediately release the smart/learn button. Sometimes it can help if you are in the garage when you program your remotes this way and it will drown out any distant signal.

Nov 20, 2010 | Sears Craftsman LiftMaster Chamberlain...

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I really need your help. My Craftsman unit model number is 139.53615SR manufactured 1/92. I have a three car garage. The original two remote controls were lost and since then I've used the setting in my...


Have your neighbor bring over his remote and open or close your door with it. Then hold the smart/learn button in for 6 seconds on your opener. Then see if he can open your door. He shouldn't be able to because that procedure erases the memory in your opener. No remotes should work. You need to get that remote #53778 back and program it and then see if your neighbor can open your door. If he can open your door at any point after you have held that button in for 6 seconds you need to get a new door opener.

Oct 25, 2010 | Sears Craftsman LiftMaster Chamberlain...

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My remote is opening both my door and my neighbor's door. I think we accidently swithched them and once reporgrammed, mine opens both doors. How can I re-program it to open only my door?


one or the other remote has an error so when you set up your remote make sure neighbor is not home ... I had this problem when my neighbor was home and I reset my remote and keypad ... later I noticed my neighbors door either opened or closed with mine I called customer support and found the neighbors sensor emitted constantly and reset to mine. ... soo Reset you remote and keypad if you have one when you neighbor is away!!! :)

Sep 29, 2009 | Televison & Video

1 Answer

Garage door is opening when the neighbor open theirs with remot


You say you "setup the remote and the main box but doesn't solve." I think you mean you programmed the unit but I'm not sure. Anyway try holding the smart/learn button in for 10 seconds and this will erase the memory. None of the remotes should work. Now when you are sure the neighbor will not be using their opener, program your remotes. This may be what you did but I'm not sure.

Aug 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

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Universal garage door remote


I have a feeling your neighbor operated their door opener when you were programming your new clicker. Try erasing the memory of your opener and then program the clicker again making sure your neighbors do not operate theirs at the same time. To erase the memory hold the smart/learn button in for 10 seconds.

Jul 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opened by neighbor


Have you seen the neighbor open your door? The reason I ask is because it is almost impossible. The most common cause of a door opening by itself is a bad wall control or the wiring leading to it. You can temporarily eliminate both possibilities by removing the wire from terminal 1 at the rear of the motor unit. Do this and ask your neighbor to bring over his remote and try it on your opener.

Jun 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage opens/close when my neighbor engages his remote control


Anytime a door opens and/or closes by itself I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

Do the above check just to be sure. If your unit is more thaan about 2 years old (freq. 390) you CAN buy an older non security plus remote and program it to your unit. this should eliminate the neighbors remote operating your door.

HOPE THIS HELPS

Feb 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Remote and Keypads open neighbors door


Hold down learn button for 8 seconds. This clears the memory for all remotes. Then reprogam your remotes

Oct 31, 2007 | Sears Craftsman LiftMaster Chamberlain...

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